- α,β-UNSATURATED FLUORINE-CONTAINING THIOCYANATES
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A new method has been developed for the synthesis of perfluorinated α,β-unsaturated thiocyanates by the reaction of the corresponding sulfenyl chlorides with KCN in water.The thiocyanate form of perfluoro-2-methyl-2-pentene-3-thiocyanate was isomerized to the isothiocyanate form.This rearrangement is initiated by both fluoride and thiocyanate anions.
- Popkova, V. Ya.,Mysov, E. I.,Galakhov, M. V.,Osmanov, V. K.,German, L. S.
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- Synthesis of trifluoromethylated heterocycles using partially fluorinated epoxides
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Reaction of 2-trifluoromethyl- (1) and 2,2-bis(trifluoromethyl)- (2) oxiranes with a variety of sulfur nucleophiles proceeds rapidly and under mild conditions. For example, epoxide 2 reacts with aqueous solution of Na 2S, producing S[CH2/
- Petrov, Viacheslav A.,Marshall, Will
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experimental part
p. 41 - 51
(2011/02/25)
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- Reaction of Perfluoro(1-ethyl-2-methyl-1-propenyl) Isothiocyanate with Thiourea
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Perfluoro(1-ethyl-2-methyl-1-propenyl) isocyanate reacts with thiourea in the presence of triethylamine to give a mixture of 4-tetrafluroethylidene-5,5-di(trifluoromethyl)-1,3-thiazolidine-2-thione, perfluoro-[bis(4-ethylidene-5,5-dimethyl-4,5-dihydro-1,3-thiazol-2-yl)] sulfide and perfluoro[bis(4-ethylidene-5,5-dimethyl-4,5-dihydro-1,3-thiazol-2-yl)] disulfide.
- Furin,Zhuzhgov
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p. 1606 - 1609
(2007/10/03)
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- HETEROCYCLIZATION REACTIONS WITH α,β-UNSATURATED FLUORINE-CONTAINING ISOTHIOCYANATES: REACTIONS OF PERFLUORO-2-METHYL-2-PENTEN-3-YL ISOTHIOCYANATE WITH ENAMINES
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A one-step synthesis of polyfluorinated 4,5-dihydro- and 2,5-dihydro-1,3-thiazoles starting from perfluoro-2-methyl-2-penten-3-yl-isothiocyanate and enamines is described.The formation of 4,5-dihydro-1,3-thiazoles proceeds stereospecifically with respect
- Popkova, Vera Ya.,Dolgushin, Fyodor M.,Antipin, Mikhail Yu.,Yanovsky, Aleksandr I.,Struchkov, Yurii T.,Burger, Klaus
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p. 1015 - 1026
(2007/10/02)
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- Reactions of Some Internal Perfluoroolefins with Sodium and Potassium Thiocyanates
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Reactions of perfluoro-2-methyl-2-pentene, perfluoro-3-isopropyl-4-methyl-2-pentene, and perfluoro-1-ethyl-cyclohexene with potassium and sodium thiocyanates result in substitution of the fluorine atom at the double bond.Reactions of perfluoro-2-methyl-3-
- Furin, G. G.
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p. 465 - 468
(2007/10/03)
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- Reversible intramolecular 1,3-chlorine migration in the triad 'carbon-carbon-sulfur'
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An intramolecular 1,3-chlorine migration in the triad 'carbon-carbon-sulfur' with nucleophilic solvent or catalyst assistance is proposed as a mechanism for the perfluoro-2-methylpent-2-ene-3-sulfenyl chloride 12-chloroperfluoro-2-methylpentane-3-thione 2 tautomerism.The data from radionuclidic investigations were used to elucidate the aforementioned mechanism.The results of MNDO calculations showed that the solvation lowers the height of the reaction barriers of both direct and reverse reactions and brings about different reaction pathways for these two processes, providing greater assistance to the 1->2 than to the 2->1 reaction.
- Popkova, Vera Ya.,Anisimov, Victor M.,Dolenko, Georgii N.,Semenenko, Mikhail N.,Fedoseev, Vladimir M.
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p. 1375 - 1380
(2007/10/02)
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